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Liquid Filter Bags
Liquid filter bags in PP, PE, nylon, PTFE and oil-absorbing blends. 1 to 300 micron, 7"x16" to 6"x22". Dimensional equivalent to common OEM housings.
What The Liquid Filter Bags Does In Your Line
Liquid filter bags are available in felt and mesh materials. TPO and TPE series use PP and PE for graded density depth filtration with high dirt holding capacity. NMO is nylon for surface filtration at high temperature. PTFE is for chemical resistance and extremely high temperature. LCR series serves both filtration and oil absorption. The bags are ultrasonically welded or thread sewn, with seal ring options and various micron ratings. They are designed for high flow rate and low pressure drop across broad chemical and temperature ranges.
Category: Liquid Filter Bags · Industries: Chemical And Coatings Plants Oil And Gas Operations
Why Buyers Pick This Element
- High dirt holding capacity for extended service life in process water and chemical lines
- Low pressure drop maintains system flow rates during extended operation
- Ultrasonic welding or thread sewing ensures leak-free seal integrity
- Multiple material options cover PP, PE, nylon, PTFE and oil-absorbing blends
- Available in multiple sizes and micron ratings to match existing housing and duty
- Dimensional equivalent to common OEM filter bag housings without requiring system change
Buyers Who Specify This Cartridge
- Plant engineers replacing OEM filter bags in existing cartridge or bag housings
- Procurement teams seeking lower-cost equivalents to branded filter bags
- Filtration distributors specifying replacements for common OEM part numbers
- System integrators designing new skids with standardised filter bag configurations
- Maintenance teams needing reliable, long-life bags for high-volume production lines
What It Fixes On The Line
- OEM filter bags have long lead times and high unit cost, disrupting maintenance schedules
- Filter bags collapse or leak during operation due to weak seam or poor material choice
- Chemical attack on the bag material causes failure and contamination of downstream process
- Low dirt holding capacity requires frequent change-outs, increasing downtime and cost
- Inconsistent micron rating across batches leads to product quality variation
Construction Detail
- Available in felt and mesh construction for depth or surface filtration
- Ultrasonic welded or thread sewn seams for leak-free performance
- Multiple material options: PP, PE, nylon, PTFE, and oil-absorbing blends
- Wide range of micron ratings from 1 to 300 micron for precise particle control
- Multiple sizes: 7"x16", 7"x32", 4"x9", 4"x15", 6"x22" to match common housings
- Seal ring options with collar types: PP, PE, galvanised, SS304, SS316
- Bottom types: triangle or circle for fit in standard housings
- High flow rate with low pressure drop across all material and size combinations
Materials Of Construction
- PP (TPO series) for general purpose depth filtration with high dirt holding capacity
- PE (TPE series) for higher temperature and chemical resistance in process water
- Nylon (NMO series) for high temperature surface filtration and mechanical strength
- PTFE (TPF series) for extreme chemical resistance and high temperature stability
- Oil-absorbing blend (LCR series) for dual function filtration and oil removal
- Seal rings in PP, PE, galvanised steel, SS304 or SS316 to match housing material
Liquid Filter Bags Specifications
Every figure below comes from the manufacturer data for this series. Anything not listed here is not published and we will confirm it against your duty before you order.
| Series | TPO, TPE, NMO, TPF, LCR |
|---|---|
| Materials | PP, PE, nylon, PTFE, oil-absorbing blend |
| Max Temperature | PP 80℃, PE 120℃, NMO 180℃, PTFE 260℃ |
| Sizes | 7"x16", 7"x32", 4"x9", 4"x15", 6"x22" |
| Seam Type | Welded, Sewn |
| Collar Type | PP, PE, Galvanised, SS304, SS316 |
| Bottom Type | Triangle, Circle |
| Flow Pattern | Inside-out |
| Order Code Example | TPO-5-2-P-W-C |
Where It Is Installed
RO pretreatment where high flow and low pressure drop are critical before membrane stages
Food and beverage processing requiring clean, consistent filtration without extractables
Bulk chemical transfer where chemical resistance and high temperature stability are needed
Paint and coating lines where particulate control prevents defects in finished product
Process water polishing in pharmaceutical or electronics manufacturing with tight micron control
How This Cartridge Is Built
Media Preparation
Material selection based on fluid chemistry and temperature duty
Pack Forming
Cutting of fabric to size using precision die-cutting or laser cutting
Hardware Assembly
Ultrasonic welding or thread sewing of seams to ensure leak-free integrity
End Cap Bonding
Attachment of collar and bottom components using mechanical or thermal methods
Configuration
Inspection of seam strength, material thickness and dimensional accuracy
Inspection And Packing
Final packaging in sealed bags with order code printed on label
Checks Before It Ships
- Dimensional check of size, collar diameter and bottom shape against order code
- Seam integrity test via pressure or visual inspection for weld or stitch defects
- Material thickness and uniformity verified across the bag surface
- Micron rating confirmed by manufacturer’s test data for the material batch
- Seal ring material and finish checked for compatibility with housing seat
- Final visual inspection for foreign particles, tears or misalignment
What We Can Change For You
- Select micron rating from 1 to 300 micron based on process requirement
- Choose size: 7"x16", 7"x32", 4"x9", 4"x15", or 6"x22" to match housing
- Pick seam type: welded or sewn, based on fluid and pressure duty
- Select collar material: PP, PE, galvanised, SS304, or SS316
- Choose bottom type: triangle or circle for housing fit
- Private label printing and carton marking available for distributors
How It Compares With The Alternatives
| OEM branded filter bags | Same dimensions and fit at lower landed cost and shorter lead time, without OEM warranty documentation |
|---|---|
| Pleated cartridges | Filter bags offer higher dirt holding capacity and lower cost for coarse duty, but pleated cartridges provide tighter absolute ratings |
| String wound cartridges | Filter bags have higher flow rate and lower pressure drop, but string wound cartridges offer more consistent depth filtration across a range of particle sizes |
| Activated carbon cartridges | Filter bags are for particulate removal only; activated carbon cartridges are for chemical and odour removal, not interchangeable |
Installing And Running This Cartridge
- Confirm housing size, collar type, and bottom shape before ordering to ensure fit
- Choose material based on fluid temperature and chemical compatibility
- Use welded seams for high pressure or aggressive fluids; sewn for lower pressure applications
- Inspect the bag for damage before installation; do not use if torn or misshapen
- Replace when differential pressure increases by N bar or as per scheduled maintenance
Liquid Filter Bags FAQ
Will this filter bag fit my existing housing?
What materials are used and which is best for my fluid?
Can I get a sample before ordering?
How do I read the order code?
What is the maximum temperature for each material?
Other Elements Buyers Compare With This One
Reading That Helps You Specify
Bag Filters Compared With Cartridge Filters
Compare liquid filter bags and pleated bag cartridges. Learn when each is right for your process, and how they fit standard SBS swing bolt housings.
Read GuideHow To Choose A Micron Rating For Cartridge Filters
Absolute versus nominal ratings, choosing from the stage you protect, and why rating drives change-out cost more than unit price.
Read GuideMelt Blown Compared With String Wound Depth Cartridges
Compare graded density, media migration, dirt holding capacity, and suitable duties for melt blown and string wound depth cartridges. Both handle 80℃ and 100μm
Read GuideSend Us Your Housing Model And Duty
Send the housing model and the code on the element you use today and we will confirm whether Liquid Filter Bags is the right match before you order.